Thermal Observation with the 35mm Lens
The Guide TK635L 3.0 is a KODIAK 3.0 thermal imaging monocular for hunting and outdoor exploration. This handheld thermal spotter combines a 35mm F0.9 lens with integrated laser ranging in a body measuring 182 × 67 × 79mm.
The 35mm F0.9 objective gives the TK635L 3.0 a 12.5° × 10.0° field of view, covering 21.9 × 17.6m at 100m. Its 2.8–22.4× magnification range supports scanning and closer examination within the same handheld device. Thermal detection extends up to 1800m.
ApexVision Imaging and Shutterless Viewing
ApexVision S1 brings together the ApexCore S1 detector, Nexus 1.0 platform and Hyper-Light 3.0 algorithm. The 640 × 512 uncooled VOx detector has a 12µm pixel pitch and 15mK NETD. A 50Hz frame rate and shutterless 3.0 technology maintain continuous thermal viewing without routine shutter interruptions. Startup takes approximately three seconds.
Integrated Laser Rangefinding
The built-in laser rangefinder measures distances up to 1200m. Thermal detection range and laser ranging distance are separate specifications, so each function has its own stated limit.
AMOLED Display and Recording
View thermal imagery through a 1.03-inch 2560 × 2560 AMOLED display with seven colour palettes. The eyepiece provides 30mm eye relief and dioptre adjustment from -6 to +6. Capture photos and video with audio to 64GB storage; connectivity includes 2.4GHz and 5GHz Wi-Fi, Bluetooth and USB-C.
Handling and Replaceable Battery Power
The symmetrical chassis and physical focus roller support left- or right-handed operation. The TK635L 3.0 weighs 524g with its battery fitted. One replaceable dedicated battery powers the device for approximately 5.5 hours; swapping to the second supplied battery gives up to 11 hours of combined use. The housing is IP67 rated, with an operating temperature range of -20°C to +50°C.
Technical Specifications
| Specification |
Value |
| Brand |
Guide |
| Series |
KODIAK 3.0 |
| Model |
TK635L 3.0 |
| Product type |
Handheld thermal imaging monocular |
| Thermal imaging system |
ApexVision S1 with ApexCore S1, Nexus 1.0 and Hyper-Light 3.0 |
| Detector |
Uncooled VOx IR detector; 8–14µm waveband |
| Sensor resolution |
640 × 512 pixels |
| Pixel pitch |
12µm |
| Thermal sensitivity NETD |
15mK |
| Frame rate |
50Hz |
| Objective lens |
35mm F0.9 |
| Magnification |
2.8–22.4× |
| Field of view |
12.5° × 10.0° |
| Linear field of view |
21.9 × 17.6m at 100m |
| Thermal detection range |
Up to 1800m |
| Focus |
Manual focus roller |
| Laser rangefinder |
Up to 1200m |
| Display |
1.03-inch AMOLED; 2560 × 2560 pixels |
| Colour palettes |
White Hot, Black Hot, Amber Sepia, Red Hot, Iron Red, Blue Hot, Green Hot |
| Eye relief |
30mm |
| Dioptre adjustment |
-6 to +6 |
| Shutterless technology |
Shutterless 3.0 |
| Startup time |
Approximately 3 seconds |
| Recording |
Photo and video with audio |
| Internal storage |
64GB |
| Wireless connectivity |
Wi-Fi 2.4GHz and 5GHz; Bluetooth |
| Interface |
USB-C power supply and USB 2.0 |
| Battery system |
One replaceable dedicated battery in use; two batteries supplied |
| Operating time |
Approximately 5.5 hours per battery; up to 11 hours combined with two batteries |
| IP rating |
IP67 |
| Operating temperature |
-20°C to +50°C |
| Weight including battery |
524g |
| Dimensions |
182 × 67 × 79mm |
Use and Setup
- Fit a dedicated battery, start the monocular and adjust the eyepiece dioptre and focus roller for the observation distance.
- Select the colour palette and magnification required for the scene. Use the integrated laser rangefinder for distance measurement up to 1200m.
- Use the photo or video function to save observations to internal storage. USB-C supports external power and USB 2.0 connectivity.
- For an extended session, change to the second dedicated battery. Use the monocular within its -20°C to +50°C operating temperature range.
Package Contents
Guide TK635L 3.0 thermal imaging monocular;
Hand strap;
Neck strap;
Carry bag;
Lint-free cloth;
Two dedicated batteries;
5V 2A adapter;
USB-A to USB-C cable;
Quick start guide;
Warranty card.
Frequently Asked Questions
What lens and magnification does this model have
The TK635L 3.0 has a 35mm F0.9 objective and 2.8–22.4× magnification. Its field of view is 12.5° × 10.0°, equivalent to 21.9 × 17.6m at 100m.
How far can it detect and measure
Thermal detection extends up to 1800m, while the built-in laser rangefinder measures up to 1200m. These figures describe different functions.
How long does each battery last
One dedicated replaceable battery provides approximately 5.5 hours of operating time. Two batteries are supplied for up to 11 hours of combined use, with a battery change between them.
Can the monocular record sound with video
Yes. It records photos and video with audio and has 64GB of internal storage.
Can it be operated with either hand
Yes. The symmetrical housing and physical focus roller support one-handed operation with the left or right hand.
